The carpet on my drivers side floor has been wet for a few weeks. I originally chalked it up to the snow we've had in the northeast but after a couple of dry days it's still wet. I've read it can be the heater core but it's mostly on the drivers side and I have no film on my windshield. My coolant levels are normal. The wet spots are closer to shifter. Is it the heater core or could in be a leak in the roof. Any help would be appreciated.

 

Is the water hot or cold? Most likely the evap drain tube is plugged up,though it is possible the evap may be leaking....